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A novel electropolymerization method for Ppy nanowire-based NH3 gas sensor with low contact resistance

Authors
Kim, Dong-ukYoo, Bongyoung
Issue Date
Dec-2011
Publisher
Elsevier BV
Keywords
Polypyrrole; Nanowire; Ammonia; Sensor; Electropolymerization
Citation
Sensors and Actuators, B: Chemical, v.160, no.1, pp.1168 - 1173
Indexed
SCIE
SCOPUS
Journal Title
Sensors and Actuators, B: Chemical
Volume
160
Number
1
Start Page
1168
End Page
1173
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/36343
DOI
10.1016/j.snb.2011.09.042
ISSN
0925-4005
Abstract
One-dimensional (1-D) nanostructures of conducting polymers are a superior choice in chemical sensors and biosensors due to possibility of constructing sensors with higher sensitivity and fast detection. Here we report a new method for fabricating two electrode sensing device with low contact resistance by electrochemical synthesis of polypyrrole (Ppy) nanowires. This approach shows a new patterning technique which makes the addressable Ppy nanowires on the pre-patterned sub-Ni nanowires, in which large contact area between metal electrodes and Ppy significantly reduced the contact resistance. Performance of Ppy nanowire-based gas sensors for the detection of sub-ppm level concentrations of ammonia (NH3) gas is investigated. (C) 2011 Elsevier B.V. All rights reserved.
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ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)
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